Vernal pools are seasonal wetlands, rare ecological features that provide essential habitat for a variety of living beings, including frogs and salamanders. They are vulnerable to a variety of threats associated with human impact. Michael Hayslett (Virginia Vernal Pools LLC), a state expert on vernalpools, will lead the tours. He is conducting an inventory of the pools as part of an initiative for Fairfax County Park Authority and is being aided by the Friends of Accotink Creek. For more information, contact Kris Unger at krisunger@gmail.com, or 301-980-5621.